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  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
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  <script>
    //变量覆盖
    let age = 18
    age = 21
    //声明多个变量
    let name = '浩白', uname = '熊哥'
    console.log(age, uname);
  </script>

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